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https://github.com/codeninjasllc/codecombat.git
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84 lines
3 KiB
CoffeeScript
84 lines
3 KiB
CoffeeScript
UserCodeProblem = require './UserCodeProblem'
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Handler = require '../commons/Handler'
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class UserCodeProblemHandler extends Handler
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modelClass: UserCodeProblem
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jsonSchema: require '../../app/schemas/models/user_code_problem'
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editableProperties: [
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'code'
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'codeSnippet'
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'errHint'
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'errId'
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'errLevel'
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'errMessage'
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'errMessageNoLineInfo'
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'errRange'
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'errType'
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'language'
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'levelID'
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]
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makeNewInstance: (req) ->
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ucp = super(req)
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ucp.set('creator', req.user._id)
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ucp
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getByRelationship: (req, res, args...) ->
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return @getCommonLevelProblemsBySlug(req, res) if args[1] is 'common_problems'
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super(arguments...)
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getCommonLevelProblemsBySlug: (req, res) ->
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# Returns an ordered array of common user code problems with: language, message, hint, count
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# Parameters:
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# slug - level slug
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# startDay - Inclusive, optional, e.g. '2014-12-14'
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# endDay - Exclusive, optional, e.g. '2014-12-16'
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levelSlug = req.query.slug or req.body.slug
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startDay = req.query.startDay or req.body.startDay
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endDay = req.query.endDay or req.body.endDay
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return @sendSuccess res, [] unless levelSlug?
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# Cache results for 1 day
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@commonLevelProblemsCache ?= {}
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@commonLevelProblemsCachedSince ?= new Date()
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if (new Date()) - @commonLevelProblemsCachedSince > 86400 * 1000 # Dumb cache expiration
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@commonLevelProblemsCache = {}
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@commonLevelProblemsCachedSince = new Date()
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cacheKey = levelSlug
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cacheKey += 's' + startDay if startDay?
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cacheKey += 'e' + endDay if endDay?
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return @sendSuccess res, commonProblems if commonProblems = @commonLevelProblemsCache[cacheKey]
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# Build query
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match = if startDay? or endDay? then {$match: {$and: []}} else {$match: {}}
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match["$match"]["$and"].push created: {$gte: new Date(startDay + "T00:00:00.000Z")} if startDay?
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match["$match"]["$and"].push created: {$lt: new Date(endDay + "T00:00:00.000Z")} if endDay?
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group = {"$group": {"_id": {"errMessage": "$errMessageNoLineInfo", "errHint": "$errHint", "language": "$language", "levelID": "$levelID"}, "count": {"$sum": 1}}}
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sort = { $sort : { "_id.levelID": 1, count : -1, "_id.language": 1 } }
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query = UserCodeProblem.aggregate match, group, sort
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query.exec (err, data) =>
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if err? then return @sendDatabaseError res, err
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# Build per-level common problem lists
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commonProblems = {}
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for item in data
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levelID = item._id.levelID
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commonProblems[levelID] ?= []
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commonProblems[levelID].push
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language: item._id.language
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message: item._id.errMessage
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hint: item._id.errHint
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count: item.count
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# Cache all the levels
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for levelID of commonProblems
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cacheKey = levelID
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cacheKey += 's' + startDay if startDay?
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cacheKey += 'e' + endDay if endDay?
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@commonLevelProblemsCache[cacheKey] = commonProblems[levelID]
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@sendSuccess res, commonProblems[levelSlug]
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module.exports = new UserCodeProblemHandler()
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